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{{Chembox
{{Chembox
| verifiedrevid = 428834649
| verifiedrevid = 428834649
| ImageFile =
| ImageFile = Beryllium azide.svg
| ImageSize =
| ImageSize =
| ImageAlt =
| ImageAlt =
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| OtherNames =
| OtherNames =
|Section1={{Chembox Identifiers
|Section1={{Chembox Identifiers
| CASNo_Ref = {{cascite|correct|??}}
| CASNo_Ref = {{cascite|correct|CAS}}
| CASNo = 44606-75-9
| CASNo = 44606-75-9
| ChemSpiderID = 103867673
| PubChem =
| PubChem = 129631211
| RTECS =
| RTECS =
| StdInChI=1S/Be.2N3/c;2*1-3-2/q+2;2*-1
| SMILES = }}
| StdInChIKey = FGTDFEYQGIRFTE-UHFFFAOYSA-N
| SMILES = [Be+2].[N-]=[N+]=[N-].[N-]=[N+]=[N-] }}
|Section2={{Chembox Properties
|Section2={{Chembox Properties
| Formula={{chem2|Be(N3)2}}
| Be=1 | N=6
| Be=1|N=6
| Appearance = white solid<ref name="Wiberg">{{ cite journal | journal = Zeitschrift für Naturforschung B | volume = 9 | page = 502 | year = 1954 | title = Beryllium azide, Be(N<sub>3</sub>)<sub>2</sub> | first1 = E. | last1 = Wiberg | first2 = M. | last2 = Horst }}</ref>
| Appearance = white solid<ref name="Wiberg">{{ cite journal | journal = Zeitschrift für Naturforschung B | volume = 9 | page = 502 | year = 1954 | title = Beryllium azide, Be(N<sub>3</sub>)<sub>2</sub> | first1 = E. | last1 = Wiberg | first2 = M. | last2 = Horst }}</ref>
| Density =
| Density =
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| REL = Ca C 0.0005 mg/m<sup>3</sup> (as Be)<ref name=PGCH>{{PGCH|0054}}</ref>
| REL = Ca C 0.0005 mg/m<sup>3</sup> (as Be)<ref name=PGCH>{{PGCH|0054}}</ref>
| PEL = TWA 0.002 mg/m<sup>3</sup><br/>C 0.005 mg/m<sup>3</sup> (30 minutes), with a maximum peak of 0.025 mg/m<sup>3</sup> (as Be)<ref name=PGCH/>
| PEL = TWA 0.002 mg/m<sup>3</sup><br/>C 0.005 mg/m<sup>3</sup> (30 minutes), with a maximum peak of 0.025 mg/m<sup>3</sup> (as Be)<ref name=PGCH/>
| IDLH = Ca [4 mg/m<sup>3</sup> (as Be)]<ref name=PGCH/>
| IDLH = Ca [4 mg/m<sup>3</sup> (as Be)]<ref name=PGCH/>
}}
}}
}}
}}
{{confused2|[[beryllium nitride]], Be<sub>3</sub>N<sub>2</sub>}}
{{distinguish|text=[[beryllium nitride]], {{chem2|Be3N2}}}}
'''Beryllium azide''', Be(N<sub>3</sub>)<sub>2</sub>, is an [[inorganic compound]].
'''Beryllium azide''', {{chem2|Be(N3)2}}, is an [[inorganic compound]]. It is the [[beryllium]] analog of [[hydrazoic acid]] ({{chem2|HN3}}).


==Synthesis==
==Synthesis==
Beryllium azide has been synthesised by the reaction of [[beryllium chloride]] with neat [[trimethylsilyl azide]]:<ref name="Klapötke">{{ cite journal | journal = Main Group Metal Chemistry | year = 1999 | volume = 22 | issue = 6 | pages = 357–360 | title = Synthesis and spectroscopic characterization of beryllium azide and two derivatives | first1 = T. M. | last1 = Klapötke | first2 = T. | last2 = Schutt }}</ref>
Beryllium azide has been synthesised by the reaction of [[beryllium chloride]] with neat [[trimethylsilyl azide]]:<ref name="Klapötke">{{ cite journal | journal = Main Group Metal Chemistry | year = 1999 | volume = 22 | issue = 6 | pages = 357–360 | title = Synthesis and spectroscopic characterization of beryllium azide and two derivatives | first1 = T. M. | last1 = Klapötke | first2 = T. | last2 = Schutt | doi = 10.1515/MGMC.1999.22.6.357 | s2cid = 101174968 }}</ref>


:{{chem2|BeCl2 + 2 [[Methyl|Me]]3SiN3 → Be(N3)2 + 2 Me3SiCl}}
:BeCl<sub>2</sub> + 2Me<sub>3</sub>SiN<sub>3</sub> → Be(N<sub>3</sub>)<sub>2</sub> + 2Me<sub>3</sub>SiCl


Alternatively, [[dimethylberyllium]] reacts with [[hydrazoic acid]] in dry [[diethyl ether]] at −116&nbsp;°C:<ref name="Wiberg" />
Alternatively, [[dimethylberyllium]] reacts with hydrazoic acid in dry [[diethyl ether]] at −116&nbsp;°C:<ref name="Wiberg" />


:Be(CH<sub>3</sub>)<sub>2</sub> + 2HN<sub>3</sub> → Be(N<sub>3</sub>)<sub>2</sub> + 2CH<sub>4</sub>
:{{chem2|Be(CH3)2 + 2 HN3 → Be(N3)2 + 2 CH4}}


==Structure==
==Structure==
Beryllium azide is predicted to consist of infinite chains, with tetrahedrally coordinated Be<sup>2+</sup> ions linked by end-on bridging N<sub>3</sub><sup>−</sup> ions.<ref name="Klapötke" />
[[Infrared spectroscopy|Infrared]] and [[Raman spectroscopy|Raman]] spectra suggest that beryllium azide consists of infinite chains, with [[tetrahedral molecular geometry|tetrahedrally]] coordinated beryllium(II) atoms [[covalent bond|covalently]] bridged by one end of the [[azide]] units.<ref name="Klapötke" />


==References==
==References==
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{{Beryllium compounds}}
{{Beryllium compounds}}
{{Azides}}


{{DEFAULTSORT:Beryllium Azide}}
{{DEFAULTSORT:Beryllium Azide}}
[[Category:Azides]]
[[Category:Azides]]
[[Category:Beryllium compounds]]
[[Category:Beryllium compounds]]

{{inorganic-compound-stub}}

Latest revision as of 20:40, 20 November 2024

Beryllium azide
Names
IUPAC name
Beryllium azide
Identifiers
3D model (JSmol)
ChemSpider
  • InChI=1S/Be.2N3/c;2*1-3-2/q+2;2*-1
    Key: FGTDFEYQGIRFTE-UHFFFAOYSA-N
  • [Be+2].[N-]=[N+]=[N-].[N-]=[N+]=[N-]
Properties
Be(N3)2
Molar mass 93.054 g·mol−1
Appearance white solid[1]
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
 TWA 0.002 mg/m3
C 0.005 mg/m3 (30 minutes), with a maximum peak of 0.025 mg/m3 (as Be)[2]
REL (Recommended)
 Ca C 0.0005 mg/m3 (as Be)[2]
IDLH (Immediate danger)
 Ca [4 mg/m3 (as Be)][2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
checkY verify (what is checkY☒N ?)
Not to be confused with beryllium nitride, Be3N2.

Beryllium azide, Be(N3)2, is an inorganic compound. It is the beryllium analog of hydrazoic acid (HN3).

Synthesis

[edit]

Beryllium azide has been synthesised by the reaction of beryllium chloride with neat trimethylsilyl azide:[3]

BeCl2 + 2 Me3SiN3 → Be(N3)2 + 2 Me3SiCl

Alternatively, dimethylberyllium reacts with hydrazoic acid in dry diethyl ether at −116 °C:[1]

Be(CH3)2 + 2 HN3 → Be(N3)2 + 2 CH4

Structure

[edit]

Infrared and Raman spectra suggest that beryllium azide consists of infinite chains, with tetrahedrally coordinated beryllium(II) atoms covalently bridged by one end of the azide units.[3]

References

[edit]
  1. ^ a b Wiberg, E.; Horst, M. (1954). "Beryllium azide, Be(N3)2". Zeitschrift für Naturforschung B. 9: 502.
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0054". National Institute for Occupational Safety and Health (NIOSH).
  3. ^ a b Klapötke, T. M.; Schutt, T. (1999). "Synthesis and spectroscopic characterization of beryllium azide and two derivatives". Main Group Metal Chemistry. 22 (6): 357–360. doi:10.1515/MGMC.1999.22.6.357. S2CID 101174968.
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